<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<h1>登录页面</h1>
<form action="">
  <input type="text" name="username" placeholder="用户名">
  <input type="text" name="password" placeholder="密码">
  <input type="button" value="登录" @click="login()">
</form>

<script src="js/vue.min.js"></script>
<script src="js/axios.min.js"></script>
<script>
  let v = new Vue({
    el:"form",
    data:{

    },
    methods:{
      login(){
        let data = new FormData(document.querySelector("form"))
        axios.post("/login",data).then(function (response){
          if(response.data==1){
            alert("登录成功")

          }else if(response.data==2){
            alert("密码错误")
          }else{
            alert("用户名不存在")
          }
        })

      }
    }

  })

</script>
</body>
</html>